<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Responsive Big Screen Design with vw</title>
    <style>
        body {
            margin: 0;
            padding: 0;
            font-family: Arial, sans-serif;
        }

        .container {
            max-width: 100vw;
            /* 容器宽度不超过视口宽度 */
            height: 56.25vw;
            /* 容器高度等于视口高度 */
            padding: 2vw;
            /* 内边距使用vw单位 */
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
        }

        h1 {
            font-size: 5vw;
            /* 字体大小使用vw单位 */
            color: #333;
        }

        p {
            font-size: 2vw;
            /* 字体大小使用vw单位 */
            color: #666;
        }
    </style>
</head>

<body>
    <div class="container">
        <h1>Welcome to the Big Screen</h1>
        <p>This is a responsive design example using vw units.</p>
    </div>
</body>

</html>